2251 	int success;  in xen_exchange_memory()  local
2272 	success = (exchange.nr_exchanged == extents_in);  in xen_exchange_memory()
2274 	BUG_ON(!success && ((exchange.nr_exchanged != 0) || (rc == 0)));  in xen_exchange_memory()
2275 	BUG_ON(success && (rc != 0));  in xen_exchange_memory()
2277 	return success;  in xen_exchange_memory()
2286 	int            success;  in xen_create_contiguous_region()  local
2310 	success = xen_exchange_memory(1UL << order, 0, in_frames,  in xen_create_contiguous_region()
2315 	if (success)  in xen_create_contiguous_region()
2323 	return success ? 0 : -ENOMEM;  in xen_create_contiguous_region()
2331 	int success;  in xen_destroy_contiguous_region()  local
2352 	success = xen_exchange_memory(1, order, &in_frame, 1UL << order,  in xen_destroy_contiguous_region()
2356 	if (success)  in xen_destroy_contiguous_region()